Who Do You Think You Are?
8pm, BBC1
Even in its 13th series, the revelations on WDYTYA? remain as varied, heartbreaking and unpredictable as ever. Tonight, actor Warwick Davis delves into his family’s past, discovering a link to a fellow performer that proves unexpectedly problematic. Was one of his forebears a bigamist? And what was the reason for his great-grandfather’s untimely death? A gentler journey than that of, say, Danny Dyer, but an engaging one nonetheless. Hannah J Davies
The Real Marigold Hotel
9pm, BBC1
The travel documentary series for celebrities of a certain age returns and is upgraded to club class – ie, BBC1. Dennis Taylor, Rustie Lee, Miriam Stoppard, Bill Oddie, Sheila Ferguson from the Three Degrees, Paul Nicholas, Lionel Blair and Amanda Barrie head to Kochi in Kerala. “It’s got the edge on Eastbourne,” says Barrie. Meanwhile, Lee gets schooled in the local cuisine, and Nicholas arrives rather short on underpants. Ben Arnold
No Offence
9pm, Channel 4
The second series of Paul Abbott’s blackly comic, bracingly in-your-face cop drama kicked off with a fateful explosion at a Manchester gangland funeral, and tonight’s finale threatens to end with an even bigger bang. The indomitable DI Deering seems to be closing in on calculating racketeer Nora Attah but, in reality, her unit is falling apart. Can coppers Dinah and Joy rub along with their steamrollering boss long enough for them all to make the ultimate collar? Graeme Virtue
Roots
9pm, BBC4
Episode two of the Roots remake. It’s the American revolutionary war era, and Kunta Kinte escapes to join the British army, which sends him into combat without a firearm. Unsurprisingly, this doesn’t end well, and Kinte is recaptured and brutalised, a prelude to meeting the love of his life. Despite moments where the emotional timbre is too Hollywood, this story has real power, even second time around. Look out for a top turn from Forest Whitaker as Fiddler, too. Jonathan Wright
24: Legacy
9pm, Fox
Corey Hawkins takes over Kiefer Sutherland’s job, desperately sprinting about trying to stop an apocalypse, but otherwise 24 is in familiar shape as it reboots. It’s all plot and pace, with everyone apart from the main character a potential villain, and it’s built on the problematic notion that the US is perpetually imperilled by foreign terrorists. Here, they’re picking off members of an elite Army Rangers unit whose recent mission in Yemen had secret significance. Jack Seale
I’m 21 But Look 61: Extraordinary People
10pm, Channel 5
Rotherham teenager Zara Hartshorn has more to be concerned about than her Instagram follower count. Having been born with lipodystrophy, a genetic condition that stops her skin snapping back into place, Zara is often mistaken for a much older woman. Corrective surgery is possible, but the only surgeon who can help is in the US. This film follows Zara and family as they attempt to make a truly life-changing trip. Mark Gibbings-Jones
Madam Secretary
10pm, Sky Living
The everyday madness of the current White House places dramatisations about the US administration in a quandary. They seem too sane, too functional, too reasonable to be true. In this Morgan Freeman-directed season three opener, following a series of disasters at sea, Téa Leoni’s Elizabeth tries to persuade the president to take climate change more seriously – but could this result in his being a one-term presidency? David Stubbs
Film choice
Mr Nice (Bernard Rose, 2010) 11.35pm, Film4
Adapted from the autobiography of Howard Marks, this is a lighthearted, Bernard Rose-tinted portrait of the world’s once-most-famous drug trafficker. It follows his amazing career from the Welsh valleys to Oxford University hash smoker to 70s drug baron, dealing with the IRA, MI6 and the mafia along the way. Marks is played with seductive, entirely guilt-free charm by Rhys Ifans. Paul Howlett
Today’s best live sport
Snooker: The Welsh Open The third day’s play from Cardiff. 10am, Eurosport 2
Champions League football: Bayern Munich v Arsenal A tough assignment for Arsenal as the tournament reaches its knockout phase. 7pm, BT Sport 2
NBA: Cleveland Cavaliers v Indiana Pacers Coverage of the clash from Quicken Loans Arena. 12midnight, BT Sport 1
